Your foot is an intricate network of bones, ligaments, tendons and muscles. Feet must be strong enough to bear your body weight, but that makes them prone to injury and pain. Foot pain can affect any part of your foot, from your toes to your Achilles tendon at the back of your heel. Common problems include bunions, plantar warts, and corns and callouses. However, more serious conditions, such as fractures, arthritis and neuropathy, also can develop in the feet.